It has been found out that the major culprits for the corrosion cracking are the concentration of harmful ions from caustic wash and material settlement and residue tension strain .

装置碱 洗、 物料沉积导致有害离子浓缩及设备存在残余拉应力是造成腐蚀开裂的主要原因。

By means of analysis on material for material for wash oil processing system and optimization of process the rational material and new process for the production of β - methyl naphthalene is given .

通过对 洗油加工装置物料的分析和工艺的优化，提出了生产β-甲基萘的合理 物料和新的工艺流程。

First based on the definition of bed material load and wash load new method which delineating bed material load and wash load has been proposed .

分别为：一是根据床沙质与冲泻质的定义，建立了床 沙质 与 冲泻质临界粒径划分的新方法；

A lavage is a liquid that doctors introduce into the lung to wash out unwanted material .

灌洗液是医生用来 清洗肺中不需要的 物质。

Experiment results show that ion exchange model 、 acid wash 、 Fe exchange quantity has definite influence for defluoridation effect by means of acid wash and dynamic exchange model can prominently improve defluoridation effect of defluoridation material ;

实验结果表明， 改性离子的交换方式、酸洗以及树脂载铁量对脱氟效果有一定的影响，采用 酸洗和动态交换方式可显著增大脱氟 剂的脱氟效果；

New approach to differentiating wash load and bed material load

床 沙质 与 冲 泻质划分的新方法

Wash material off the skin with soap and water .

洗净 材料关闭用肥皂和水 清洗皮肤。

Observing wash degree bulging ratio and distributing of filtrating material . Measure turbidity of filtrate and reduction of hydraulic pressure .

观察 反 冲洗膨胀率、 洗强度及滤 层分布情况。测定滤后水浊度及水头损失。